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Proceedings Paper

Thermal behavior of a high power generator exciter bridge measured by optical fiber sensors
Author(s): Werner K. Probst; Fernando Bortolotti; Kleiton de Morais Sousa; Hypolito José Kalinowski; Cicero Martelli; Jean Carlos Cardozo da Silva
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Paper Abstract

This paper presents temperature measurements taken at a 3-phase thyristor rectifier bridge in a synchronous generator using fiber Bragg grating (FBG) sensors applied directly on the thyristors upper surface. The results show the thermal behavior of the thyristors during the generator’s start-up-phase and the period of time after the synchronization, with regulating operations as reaction to different load conditions. The temperature analysis is supported by current, voltage and power values of the hydroelectric power plant monitoring system. The trend of curves describes the typical behavior of thyristors which is proven with a four term transient thermal model. The different heat effect a thyristor experiences inside the switching-cabinet are also discussed.

Paper Details

Date Published: 20 May 2013
PDF: 4 pages
Proc. SPIE 8794, Fifth European Workshop on Optical Fibre Sensors, 879443 (20 May 2013); doi: 10.1117/12.2026006
Show Author Affiliations
Werner K. Probst, Munich Univ. of Applied Sciences (Germany)
Fernando Bortolotti, Federal Univ. of Technology – Paraná (Brazil)
Kleiton de Morais Sousa, Federal Univ. of Technology – Paraná (Brazil)
Hypolito José Kalinowski, Federal Univ. of Technology – Paraná (Brazil)
Cicero Martelli, Federal Univ. of Technology – Paraná (Brazil)
Jean Carlos Cardozo da Silva, Federal Univ. of Technology – Paraná (Brazil)

Published in SPIE Proceedings Vol. 8794:
Fifth European Workshop on Optical Fibre Sensors
Leszek R. Jaroszewicz, Editor(s)

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